Refactor Vertex Shader input vertex layout to use GPUVertexLayout defined on Vertex Buffer rather than Vertex Shader

#3044 #2667

Source/Engine/Graphics/DynamicBuffer.h

@@ -127,6 +127,9 @@ protected:
 /// </summary>
 class FLAXENGINE_API DynamicVertexBuffer : public DynamicBuffer
 {
+private:
+    GPUVertexLayout* _layout;
+
 public:
     /// <summary>
     /// Init
@@ -134,11 +137,16 @@ public:
     /// <param name="initialCapacity">Initial capacity of the buffer (in bytes)</param>
     /// <param name="stride">Stride in bytes</param>
     /// <param name="name">Buffer name</param>
-    DynamicVertexBuffer(uint32 initialCapacity, uint32 stride, const String& name = String::Empty)
+    /// <param name="layout">The vertex buffer layout.</param>
+    DynamicVertexBuffer(uint32 initialCapacity, uint32 stride, const String& name = String::Empty, GPUVertexLayout* layout = nullptr)
         : DynamicBuffer(initialCapacity, stride, name)
+        , _layout(layout)
     {
     }
 
+    // Sets the vertex buffer layout.
+    void SetLayout(GPUVertexLayout* layout);
+
 protected:
     // [DynamicBuffer]
     void InitDesc(GPUBufferDescription& desc, int32 numElements) override;